How much H.P for a sugar cane crusher?

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Discussion Overview

The discussion revolves around determining the horsepower (H.P) required for a miniature sugar cane crusher designed for home use. Participants explore various design considerations, including the size and configuration of the rollers, the method of power transmission, and the operational speed.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the appropriate horsepower needed to crush medium-sized sugar cane stalks, specifying the dimensions and materials of the crusher.
  • Another participant points out that power, energy, and force are distinct concepts, suggesting that the original question may lack clarity.
  • A different participant notes that the power required depends on the quantity and speed of crushing, referencing commercially available models for context.
  • One participant mentions seeing a model that operates with a 1/4 HP motor and suggests that a direct drive with 1/4 or even 1/8 HP might suffice for their design, proposing a speed of 12 to 18 rpm as adequate.

Areas of Agreement / Disagreement

Participants express differing views on the clarity of the original question and the specifics of power requirements. There is no consensus on the exact horsepower needed, as opinions vary based on design choices and operational parameters.

Contextual Notes

The discussion includes assumptions about the efficiency of different drive methods (direct vs. chain drive) and the operational speed, which may affect the power requirements. There are also references to commercially available models that may not directly apply to the custom design being discussed.

Bob02
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Hi there
I'm new to this form
Want to ask that , how much power in H.P will be sufficient to crush medium size (1 inch in dia) sugar cane stalk by the miniature sugar cane crusher for home use.The roller of the crusher will have a size of 6 inch in length and 3 inch in dia. the rollers will be of 304 s.s and in one piece, meaning the whole shaft and roller will be of one piece. that will be driven by the chain or may be directly connected to the main without using any chain or belt.
Any further idea about the design will also be welcomed especially about using chain, belt or not using them at all. the over all dimension can be any where to 12x10x10 where 12 is the height.
 
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power is not the same thing as energy which is not the same thing as force. So the question doesn't make sense.
 
Bob02 said:
Hi there
I'm new to this form
Want to ask that , how much power in H.P will be sufficient to crush medium size (1 inch in dia) sugar cane stalk by the miniature sugar cane crusher for home use.The roller of the crusher will have a size of 6 inch in length and 3 inch in dia. the rollers will be of 304 s.s and in one piece, meaning the whole shaft and roller will be of one piece. that will be driven by the chain or may be directly connected to the main without using any chain or belt.
Any further idea about the design will also be welcomed especially about using chain, belt or not using them at all. the over all dimension can be any where to 12x10x10 where 12 is the height.

Welcome to the PF.

As Curl points out, the amount of power input into performing your crushing task depends on several things, including how much and how fast you want to crush.

I'd guess that for home use, you're just doing one cane at a time, and can go slowly. I used Google Images to see what is commercially available, and got plenty of hits:

http://www.google.com/search?rlz=1T...&source=og&sa=N&hl=en&tab=wi&biw=1195&bih=726

There are even some hand-operated models shown in the results, so it can't take much power if you gear down the crank handle connection to the rollers. Have you seen units like these? Some say that you can use either the crank handle or electric power. If you can find specs on those models, that will tell you the approximate power you need from the motor.
 
thanks berkesman
I saw a model with 3 rollers, being driven by 1/4 HP motor and having chain too. I intend to use direct drive and 2 rollers so I guess 1/4 or even 1/8 HP should be fine. the motor will drive directly the main roller, both the shafts(roller+motor's) will be connected by the joint. I haven't seen any such thing else where that's why seeking advise.I guess 12 to 18 rpm should be safe and powerful enough to get the job done.
 

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